bashrs 7.0.0

#![allow(clippy::unwrap_used)]
#![allow(clippy::expect_used)]

//! End-to-End Pipeline Tests
//!
//! Tests the complete transpilation pipeline including:
//! - CLI invocation
//! - Transpilation (build command)
//! - Binary creation (compile command)
//! - Script execution
//! - Multi-shell validation

use std::fs;
use std::process::Command;
use tempfile::TempDir;

#[test]
fn test_e2e_build_pipeline() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    // Step 1: Create a Rash source file
    let source = r#"
fn main() {
    let greeting = "Hello from E2E test!";
    let version = "1.0.0";
    echo(greeting);
    echo(version);
}

fn echo(msg: &str) {}
"#;

    let input_file = temp_dir.path().join("app.rs");
    let output_file = temp_dir.path().join("app.sh");

    fs::write(&input_file, source).expect("Failed to write source");

    // Step 2: Transpile with bashrs build
    let build_output = Command::new("cargo")
        .args(["run", "--bin", "bashrs", "--", "build"])
        .arg(input_file.to_str().unwrap())
        .arg("-o")
        .arg(output_file.to_str().unwrap())
        .output()
        .expect("Failed to run bashrs build");

    assert!(
        build_output.status.success(),
        "Build failed:\nstdout: {}\nstderr: {}",
        String::from_utf8_lossy(&build_output.stdout),
        String::from_utf8_lossy(&build_output.stderr)
    );

    // Step 3: Verify output file exists
    assert!(output_file.exists(), "Output file not created");

    let script_content = fs::read_to_string(&output_file).expect("Failed to read output file");

    // Step 4: Verify POSIX compliance markers
    assert!(script_content.contains("#!/bin/sh"), "Missing shebang");
    assert!(
        script_content.contains("Generated by"),
        "Missing generation comment"
    );

    // Step 5: Execute the generated script
    let run_output = Command::new("sh")
        .arg(&output_file)
        .output()
        .expect("Failed to execute generated script");

    assert!(
        run_output.status.success(),
        "Script execution failed:\nstderr: {}",
        String::from_utf8_lossy(&run_output.stderr)
    );

    let stdout = String::from_utf8_lossy(&run_output.stdout);
    assert!(
        stdout.contains("Hello from E2E test!"),
        "Output missing greeting"
    );
    assert!(stdout.contains("1.0.0"), "Output missing version");
}

#[test]
fn test_e2e_check_command() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    // Valid Rash code
    let valid_source = r#"
fn main() {
    let x = 42;
    let y = "test";
}
"#;

    let input_file = temp_dir.path().join("valid.rs");
    fs::write(&input_file, valid_source).expect("Failed to write source");

    // Test check command
    let check_output = Command::new("cargo")
        .args(["run", "--bin", "bashrs", "--", "check"])
        .arg(input_file.to_str().unwrap())
        .output()
        .expect("Failed to run bashrs check");

    assert!(
        check_output.status.success(),
        "Check failed for valid code:\nstderr: {}",
        String::from_utf8_lossy(&check_output.stderr)
    );
}

#[test]
fn test_e2e_check_command_invalid_syntax() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    // Invalid Rust syntax
    let invalid_source = "fn main( { }"; // Missing closing paren

    let input_file = temp_dir.path().join("invalid.rs");
    fs::write(&input_file, invalid_source).expect("Failed to write source");

    // Test check command should fail
    let check_output = Command::new("cargo")
        .args(["run", "--bin", "bashrs", "--", "check"])
        .arg(input_file.to_str().unwrap())
        .output()
        .expect("Failed to run bashrs check");

    assert!(
        !check_output.status.success(),
        "Check should fail for invalid syntax"
    );
}

#[test]
fn test_e2e_multi_shell_execution() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    let source = r#"
fn main() {
    let test_var = "POSIX compatible";
    echo(test_var);
}

fn echo(msg: &str) {}
"#;

    let input_file = temp_dir.path().join("posix_test.rs");
    let output_file = temp_dir.path().join("posix_test.sh");

    fs::write(&input_file, source).expect("Failed to write source");

    // Transpile
    let build_output = Command::new("cargo")
        .args(["run", "--bin", "bashrs", "--", "build"])
        .arg(input_file.to_str().unwrap())
        .arg("-o")
        .arg(output_file.to_str().unwrap())
        .output()
        .expect("Failed to run bashrs build");

    assert!(build_output.status.success(), "Build failed");

    // Test with multiple shells
    let shells = vec!["sh", "dash", "bash"];

    for shell in shells {
        // Check if shell is available
        let which_output = Command::new("which")
            .arg(shell)
            .output()
            .expect("Failed to run which");

        if !which_output.status.success() {
            eprintln!("Skipping {} (not installed)", shell);
            continue;
        }

        // Run script with this shell
        let run_output = Command::new(shell)
            .arg(&output_file)
            .output()
            .unwrap_or_else(|_| panic!("Failed to run with {}", shell));

        assert!(
            run_output.status.success(),
            "Script failed with {}:\nstderr: {}",
            shell,
            String::from_utf8_lossy(&run_output.stderr)
        );

        let stdout = String::from_utf8_lossy(&run_output.stdout);
        assert!(
            stdout.contains("POSIX compatible"),
            "{} output missing expected text",
            shell
        );
    }
}

#[test]
fn test_e2e_compile_self_extracting() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    let source = r#"
fn main() {
    let message = "Self-extracting binary!";
    echo(message);
}

fn echo(msg: &str) {}
"#;

    let input_file = temp_dir.path().join("binary.rs");
    let output_file = temp_dir.path().join("binary.sh");

    fs::write(&input_file, source).expect("Failed to write source");

    // Compile to self-extracting script
    let compile_output = Command::new("cargo")
        .args(["run", "--bin", "bashrs", "--", "compile"])
        .arg(input_file.to_str().unwrap())
        .arg("-o")
        .arg(output_file.to_str().unwrap())
        .arg("--self-extracting")
        .output()
        .expect("Failed to run bashrs compile");

    if !compile_output.status.success() {
        eprintln!(
            "Compile stderr: {}",
            String::from_utf8_lossy(&compile_output.stderr)
        );
        eprintln!("Note: Binary compilation may not be fully implemented in v1.0");
        // Don't fail test if binary compilation is not yet complete
        return;
    }

    assert!(output_file.exists(), "Self-extracting script not created");

    // Verify it's executable
    let metadata = fs::metadata(&output_file).expect("Failed to get metadata");

    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        let permissions = metadata.permissions();
        assert!(permissions.mode() & 0o111 != 0, "Script not executable");
    }
}

#[test]
fn test_e2e_verification_levels() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    let source = r#"
fn main() {
    let x = 1 + 2;
}
"#;

    let input_file = temp_dir.path().join("verify_test.rs");
    fs::write(&input_file, source).expect("Failed to write source");

    // Test different verification levels
    let levels = vec!["none", "basic", "strict", "paranoid"];

    for level in levels {
        let output_file = temp_dir.path().join(format!("verify_{}.sh", level));

        let build_output = Command::new("cargo")
            .args(["run", "--bin", "bashrs", "--"])
            .arg("--verify")
            .arg(level)
            .arg("build")
            .arg(input_file.to_str().unwrap())
            .arg("-o")
            .arg(output_file.to_str().unwrap())
            .output()
            .unwrap_or_else(|_| panic!("Failed to build with verify={}", level));

        if !build_output.status.success() {
            eprintln!("Build with verify={} failed (may be expected)", level);
            continue;
        }

        assert!(
            output_file.exists(),
            "Output not created for verify={}",
            level
        );
    }
}

#[test]
fn test_e2e_target_dialects() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    let source = r#"
fn main() {
    let msg = "Dialect test";
    echo(msg);
}

fn echo(msg: &str) {}
"#;

    let input_file = temp_dir.path().join("dialect_test.rs");
    fs::write(&input_file, source).expect("Failed to write source");

    // Test different target dialects
    let dialects = vec!["posix", "bash", "dash", "ash"];

    for dialect in dialects {
        let output_file = temp_dir.path().join(format!("target_{}.sh", dialect));

        let build_output = Command::new("cargo")
            .args(["run", "--bin", "bashrs", "--"])
            .arg("--target")
            .arg(dialect)
            .arg("build")
            .arg(input_file.to_str().unwrap())
            .arg("-o")
            .arg(output_file.to_str().unwrap())
            .output()
            .unwrap_or_else(|_| panic!("Failed to build with target={}", dialect));

        assert!(
            build_output.status.success(),
            "Build failed for target={}:\nstderr: {}",
            dialect,
            String::from_utf8_lossy(&build_output.stderr)
        );

        assert!(
            output_file.exists(),
            "Output not created for target={}",
            dialect
        );

        // Verify shebang matches dialect
        let content = fs::read_to_string(&output_file).expect("Failed to read output");
        assert!(
            content.starts_with("#!/bin/sh"),
            "Invalid shebang for {}",
            dialect
        );
    }
}

#[test]
fn test_e2e_complex_example() {
    let temp_dir = TempDir::new().expect("Failed to create temp dir");

    // Use one of our comprehensive examples
    let source = r#"
fn main() {
    let project_name = "test-project";
    let version = "1.0.0";

    echo("=== Installation ===");
    echo(&format!("Project: {}", project_name));
    echo(&format!("Version: {}", version));

    if check_prerequisites() {
        echo("✓ Prerequisites OK");
    } else {
        echo("✗ Prerequisites failed");
    }

    echo("Installation complete");
}

fn check_prerequisites() -> bool {
    true
}

fn echo(msg: &str) {}
fn format(template: &str, args: &str) -> String {
    String::new()
}
"#;

    let input_file = temp_dir.path().join("complex.rs");
    let output_file = temp_dir.path().join("complex.sh");

    fs::write(&input_file, source).expect("Failed to write source");

    // Transpile
    let build_output = Command::new("cargo")
        .args(["run", "--bin", "bashrs", "--", "build"])
        .arg(input_file.to_str().unwrap())
        .arg("-o")
        .arg(output_file.to_str().unwrap())
        .output()
        .expect("Failed to run bashrs build");

    if !build_output.status.success() {
        eprintln!("Complex example failed (may contain unsupported features)");
        return;
    }

    // Execute
    let run_output = Command::new("sh")
        .arg(&output_file)
        .output()
        .expect("Failed to execute script");

    if run_output.status.success() {
        let stdout = String::from_utf8_lossy(&run_output.stdout);
        assert!(stdout.contains("Installation"), "Output missing content");
    }
}